Steel-rubber concrete combined bridge beam slab

Abstract

The invention discloses a steel-rubber concrete combined bridge beam slab, which comprises an upper prefabricated slab and a lower I-shaped steel girder, the upper prefabricated slab is prepared by mixing concrete and rubber powder, and the upper prefabricated slab There is an inwardly sunken longitudinal rib-shaped groove at the bottom; a threaded steel plate is welded on the top of the lower I-shaped steel beam, and the longitudinal rib-shaped groove fits with the threaded steel plate, and the Rubber concrete grout is poured into the space between the above-mentioned longitudinal rib-shaped groove and the threaded steel plate. The invention not only does not need to provide shear connectors, effectively avoids the fatigue fracture of the connector itself, but also has a series of advantages such as fast and convenient construction, tight connection between concrete slab and steel beam, and reasonable section setting.

Description

technical field [0001] The invention relates to a steel-rubber concrete combined bridge girder slab, which belongs to the field of bridge girder slabs. Background technique [0002] Bridge girder and slab components are the main load-bearing components of the bridge superstructure, which directly bear the vehicle load transmitted by the upper vehicle. Its use environment is complex and long-term service. If there is serious damage and deformation, it will greatly affect the stability and stability of the bridge structure itself. Safety, sometimes it will bring a greater disaster accident - the overall collapse of the bridge deck. [0003] In engineering, steel-concrete composite beams generally use concrete on the upper part and I-beams on the lower part, and the two are connected by shear connectors. The main problem with this method is that two types of fatigue damage often occur in traditional composite beams: fatigue crack damage of the concrete beam slab itself and fat...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of the existing steel-concrete composite beams that are prone to fatigue failure of the concrete beam slab itself and the fatigue fracture of the shear connectors between concrete and steel, the present invention provides a method that can effectively avoid shear connection Steel-rubber concrete composite bridge girder plate can effectively enhance the anti-fatigue properties of concrete without setting shear connectors.

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